"The Honeywell Metropolis Works Facility converts uranium into uranium hexafluoride, which is used to produce enriched uranium for fuel in nuclear power plants. The (Carbondale) Southern Illinoisan reports that the company says there is currently an oversupply of uranium hexafluoride in the worldwide nuclear industry."
https://www.usnews.com/news/best-states/illinois/articles/2017-11-20/honeywell-idling-metropolis-plant-reducing-staff-by-170